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Mensah B, Oduro E. Preparation and characterization of hydrophilic and water‐swellable elastomeric nanocomposites. POLYM ENG SCI 2023. [DOI: 10.1002/pen.26239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Bismark Mensah
- Department of Materials Science and Engineering, CBAS University of Ghana Legon Ghana
| | - Emmanuel Oduro
- Department of Materials Science and Engineering, CBAS University of Ghana Legon Ghana
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2
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Awasthi P, Banerjee SS. Construction of stimuli-responsive and mechanically-adaptive thermoplastic elastomeric materials. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Awasthi P, Banerjee SS. Design of ultrastretchable and super-elastic tailorable hydrophilic thermoplastic elastomeric materials. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124914] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Banerjee SS, Natarajan TS, Subramani B. E, Wießner S, Janke A, Heinrich G, Das A. Temperature scanning stress relaxation behavior of water responsive and mechanically adaptive elastomer nanocomposites. J Appl Polym Sci 2020. [DOI: 10.1002/app.48344] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shib Shankar Banerjee
- Leibniz‐Institut für Polymerforschung Dresden e. V, Hohe Straße 6 D‐01069 Dresden Germany
| | - Tamil S. Natarajan
- Leibniz‐Institut für Polymerforschung Dresden e. V, Hohe Straße 6 D‐01069 Dresden Germany
- Technische Universität Dresden, Institut für Werkstoffwissenschaft D‐01069 Dresden Germany
| | - Eshwaran Subramani B.
- Leibniz‐Institut für Polymerforschung Dresden e. V, Hohe Straße 6 D‐01069 Dresden Germany
- Technische Universität Dresden, Institut für Werkstoffwissenschaft D‐01069 Dresden Germany
| | - Sven Wießner
- Leibniz‐Institut für Polymerforschung Dresden e. V, Hohe Straße 6 D‐01069 Dresden Germany
- Technische Universität Dresden, Institut für Werkstoffwissenschaft D‐01069 Dresden Germany
| | - Andreas Janke
- Leibniz‐Institut für Polymerforschung Dresden e. V, Hohe Straße 6 D‐01069 Dresden Germany
| | - Gert Heinrich
- Leibniz‐Institut für Polymerforschung Dresden e. V, Hohe Straße 6 D‐01069 Dresden Germany
- Technische Universität Dresden, Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik D‐01069 Dresden Germany
| | - Amit Das
- Leibniz‐Institut für Polymerforschung Dresden e. V, Hohe Straße 6 D‐01069 Dresden Germany
- Technical University of Tampere, Korkeakoulunkatu 16 Fi‐33101 Tampere Finland
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Basu D, Agasty A, Das A, Chattopadhyay S, Sahu P, Heinrich G. Phase changing stearate ions as active fillers in multifunctional carboxylated acrylonitrile–butadiene composite: Exploring the role of zinc stearate. J Appl Polym Sci 2019. [DOI: 10.1002/app.48271] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Debdipta Basu
- East Centre, Indian Rubber Manufacturers Research Association Thane 400604 Maharashtra India
| | - Airit Agasty
- Department of Elastomers, Leibniz‐Institut für Polymerforschung Dresden e.V., Hohe Straße 6 Dresden 01069 Germany
- Rubber Technology CentreIndian Institute of Technology Kharagpur West Bengal 721302 India
| | - Amit Das
- Department of Elastomers, Leibniz‐Institut für Polymerforschung Dresden e.V., Hohe Straße 6 Dresden 01069 Germany
| | - Santanu Chattopadhyay
- Rubber Technology CentreIndian Institute of Technology Kharagpur West Bengal 721302 India
| | - Puspendu Sahu
- Department of PhysicsJadavpur University Kolkata 700032 India
| | - Gert Heinrich
- Department of Elastomers, Leibniz‐Institut für Polymerforschung Dresden e.V., Hohe Straße 6 Dresden 01069 Germany
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Banerjee SS, Hait S, Natarajan TS, Wießner S, Stöckelhuber KW, Jehnichen D, Janke A, Fischer D, Heinrich G, Busfield JJ, Das A. Water-Responsive and Mechanically Adaptive Natural Rubber Composites by in Situ Modification of Mineral Filler Structures. J Phys Chem B 2019; 123:5168-5175. [PMID: 31125234 DOI: 10.1021/acs.jpcb.9b02125] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new biomimetic stimuli-responsive adaptive elastomeric material, whose mechanical properties are altered by a water treatment is reported in this paper. This material is a calcium sulphate (CaSO4) filled composite with an epoxidized natural rubber (ENR) matrix. By exploiting various phase transformation processes that arise when CaSO4 is hydrated, several different crystal structures of CaSO4· xH2O can be developed in the cross-linked ENR matrix. Significant improvements in the mechanical and thermal properties are then observed in the water-treated composites. When compared with the untreated sample, there is approximately 100% increase in the dynamic modulus. The thermal stability of the composites is also improved by increasing the maximum degradation rate temperature by about 20 °C. This change in behavior results from an in situ development of hydrated crystal structures of the nanosized CaSO4 particles in the ENR matrix, which has been verified using Raman spectroscopy, transmission electron microscopy, atomic force microscopy, and X-ray scattering. This work provides a promising and relatively simple pathway for the development of next generation of mechanically adaptive elastomeric materials by an eco-friendly route, which may eventually also be developed into an innovative biodegradable and biocompatible smart polymeric material.
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Affiliation(s)
- Shib Shankar Banerjee
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Straße 6 , D-01069 Dresden , Germany
| | - Sakrit Hait
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Straße 6 , D-01069 Dresden , Germany.,Technische Universität Dresden , Institut für Werkstoffwissenschaft , D-01069 Dresden , Germany
| | - Tamil Selvan Natarajan
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Straße 6 , D-01069 Dresden , Germany.,Technische Universität Dresden , Institut für Werkstoffwissenschaft , D-01069 Dresden , Germany
| | - Sven Wießner
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Straße 6 , D-01069 Dresden , Germany.,Technische Universität Dresden , Institut für Werkstoffwissenschaft , D-01069 Dresden , Germany
| | | | - Dieter Jehnichen
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Straße 6 , D-01069 Dresden , Germany
| | - Andreas Janke
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Straße 6 , D-01069 Dresden , Germany
| | - Dieter Fischer
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Straße 6 , D-01069 Dresden , Germany
| | - Gert Heinrich
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Straße 6 , D-01069 Dresden , Germany.,Technische Universität Dresden , Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik , D-01062 Dresden , Germany
| | - James Jc Busfield
- The School of Engineering and Materials Science , Queen Mary University of London , Mile End Road , E1 4NS London , U.K
| | - Amit Das
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Straße 6 , D-01069 Dresden , Germany.,Tampere University of Technology , Korkeakoulunkatu 16 , FI-33101 Tampere , Finland
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Natarajan TS, Okamoto S, Stöckelhuber KW, Wießner S, Reuter U, Fischer D, Ghosh AK, Heinrich G, Das A. In Situ Polymorphic Alteration of Filler Structures for Biomimetic Mechanically Adaptive Elastomer Nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2018; 10:16148-16159. [PMID: 29676569 DOI: 10.1021/acsami.8b03680] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A mechanically adaptable elastomer composite is prepared with reversible soft-stiff properties that can be easily controlled. By the exploitation of different morphological structures of calcium sulfate, which acts as the active filler in a soft elastomer matrix, the magnitude of filler reinforcement can be reversibly altered, which will be reflected in changes of the final stiffness of the material. The higher stiffness, in other words, the higher modulus of the composites, is realized by the in situ development of fine nanostructured calcium sulfate dihydrate crystals, which are formed during exposure to water and, further, these highly reinforcing crystals can be transformed to a nonreinforcing hemihydrate mesocrystalline structure by simply heating the system in a controlled way. The Young's modulus of the developed material can be reversibly altered from ∼6 to ∼17 MPa, and the dynamic stiffness (storage modulus at room temperature and 10 Hz frequency) alters its value in the order of 1000%. As the transformation is related to the presence of water molecules in the crystallites, a hydrophilic elastomer matrix was selected, which is a blend of two hydrophilic polymers, namely, epichlorohydrin-ethylene oxide-allyl glycidyl ether terpolymer and a terpolymer of ethylene oxide-propylene oxide-allyl glycidyl ether. For the first time, this method also provides a route to regulate the morphology and structure of calcium sulfate nanocrystals in a confined ambient of cross-linked polymer chains.
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Affiliation(s)
- Tamil Selvan Natarajan
- Leibniz-Institut für Polymerforschung Dresden e. V. , Hohe Straße 6 , D-01069 Dresden , Germany
| | - Shigeru Okamoto
- Department of Materials Science and Engineering , Nagoya Institute of Technology , Nagoya 466-8555 , Japan
| | | | - Sven Wießner
- Leibniz-Institut für Polymerforschung Dresden e. V. , Hohe Straße 6 , D-01069 Dresden , Germany
| | - Uta Reuter
- Leibniz-Institut für Polymerforschung Dresden e. V. , Hohe Straße 6 , D-01069 Dresden , Germany
| | - Dieter Fischer
- Leibniz-Institut für Polymerforschung Dresden e. V. , Hohe Straße 6 , D-01069 Dresden , Germany
| | - Anik Kumar Ghosh
- Leibniz-Institut für Polymerforschung Dresden e. V. , Hohe Straße 6 , D-01069 Dresden , Germany
| | - Gert Heinrich
- Leibniz-Institut für Polymerforschung Dresden e. V. , Hohe Straße 6 , D-01069 Dresden , Germany
| | - Amit Das
- Leibniz-Institut für Polymerforschung Dresden e. V. , Hohe Straße 6 , D-01069 Dresden , Germany
- Technical University of Tampere , Korkeakoulunkatu 16 , Fi-33101 Tampere , Finland
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Tiwari A, Dorogin L, Tahir M, Stöckelhuber KW, Heinrich G, Espallargas N, Persson BNJ. Rubber contact mechanics: adhesion, friction and leakage of seals. SOFT MATTER 2017; 13:9103-9121. [PMID: 29177290 DOI: 10.1039/c7sm02038d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We study the adhesion, friction and leak rate of seals for four different elastomers: Acrylonitrile Butadiene Rubber (NBR), Ethylene Propylene Diene (EPDM), Polyepichlorohydrin (GECO) and Polydimethylsiloxane (PDMS). Adhesion between smooth clean glass balls and all the elastomers is studied both in the dry state and in water. In water, adhesion is observed for the NBR and PDMS elastomers, but not for the EPDM and GECO elastomers, which we attribute to the differences in surface energy and dewetting. The leakage of water is studied with rubber square-ring seals squeezed against sandblasted glass surfaces. Here we observe a strongly non-linear dependence of the leak rate on the water pressure ΔP for the elastomers exhibiting adhesion in water, while the leak rate depends nearly linearly on ΔP for the other elastomers. We attribute the non-linearity to some adhesion-related phenomena, such as dewetting or the (time-dependent) formation of gas bubbles, which blocks fluid flow channels. Finally, rubber friction is studied at low sliding speeds using smooth glass and sandblasted glass as substrates, both in the dry state and in water. The measured friction coefficients are compared to theory, and the origin of the frictional shear stress acting in the area of real contact is discussed. The NBR rubber, which exhibits the strongest adhesion both in the dry state and in water, also shows the highest friction both in the dry state and in water.
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Affiliation(s)
- A Tiwari
- Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Richard Birkelandsvei 2B, N-7491 Trondheim, Norway
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